JPH0531274B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a novel cylindrical battery that integrally combines a solar battery and a storage battery that is charged by the output of the solar battery.

[Conventional technology]

Recently, various small electric appliances such as electric razors, pocket radios, and stationary lights that use solar cells have come into widespread use. The storage battery, which is charged by the output of the battery, is stored in a battery storage section provided elsewhere within the electrical device.

[Problem to be solved by the invention]

However, in the above-mentioned conventional devices, it is necessary to separately provide a place for installing a solar cell and a place for storing a storage battery in one electric device, and it is also necessary to connect the solar cell and the storage battery storage part. This has caused the structure of electrical equipment to become more complicated and the number of assembly steps to be increased.

In addition, in order to charge this type of electrical equipment, the electrical equipment must be placed in a place exposed to direct sunlight because the solar cell is integrated into it. For this reason, there has been a problem in that the plastic exterior body of the electrical equipment is susceptible to deterioration due to ultraviolet ray irradiation and high temperature of the atmosphere during light reception.

Therefore, as shown in Japanese Utility Model Application Publication No. 50-59528, for example, a system has been proposed in which the storage battery and the solar cell are handled as a set by arranging the solar cell in an exposed manner on the outer surface of the case that houses the storage battery. has been done. However, in this case, the case for setting is set exclusively for the device used, and therefore lacks versatility to other devices.
Moreover, each time the device is used, the device and the lead wire on the set case side must be reconnected, which is troublesome.

An object of the present invention is to facilitate the use of solar cells in small electrical equipment by storing solar cells and storage batteries in an outer container, and to simplify the structure and assembly of the equipment.

Another object of the present invention is to enable compatibility with standard dry cell batteries such as unitary batteries.

Still another object of the present invention is to improve charging efficiency, that is, light receiving efficiency, even when charging on a desk or the like, and to prevent breakage and damage to solar cells and storage batteries.

[Means to solve the problem]

The cylindrical battery of the present invention has the following features: As shown in the figure, a solar cell 6 for charging the storage battery 5 is attached to a part of the outer peripheral wall of the horizontally long storage battery 5 along the left and right longitudinal direction. A storage battery 5 with a solar cell 6 is housed in an outer container 4 formed in a cylindrical shape, and an anode terminal plate 7 at one end of the left and right sides of the outer container 4 is connected to the anode side of the storage battery 5. The cathode terminals 2 connected to the cathode side of the storage battery 5 are provided on the cathode terminal plates 8 on the other left and right ends of the outer container 4, and the cylindrical wall of the outer container 4 The outer surface of the outer container 4 has a multifaceted shape in which flat surfaces 4a extending in the left and right longitudinal directions are formed continuously in the circumferential direction, and the inner peripheral wall surface has a circular cross section. , it is required that at least the portion of the solar cell 6 facing the light-receiving surface 10 be transparent.

[Effect]

According to the cylindrical battery with the above configuration, when this battery is used as a power source for small electric equipment, it is not necessary to separately incorporate a solar cell and a storage battery into the equipment as in the past, It is sufficient to store this cylindrical battery in one battery compartment, and the wiring work between the solar battery and the battery compartment can also be omitted, so this type of small electric device with a built-in storage battery that uses solar cells as a charging source can also be used. This assembly and structure can be simplified.

Moreover, according to this cylindrical battery, it can be directly loaded and used in small electrical equipment in place of dry batteries.

In particular, the cylindrical wall portion of the outer container 4 facing the light-receiving surface 10 of the solar cell 6 has a flat surface 4a on the outer wall surface, and the inner peripheral wall surface is formed with a circular cross section.
The cylindrical wall portion has a cross-sectional shape in which concave lenses are continuous in the circumferential direction, and sunlight rays irradiated on the outer surface of the outer container 4 are dispersed and reach the light receiving surface 10 of the solar cell 6 inside.
The light is received by the

The flat surface 4a on the outer surface of the outer container 4 also functions to prevent rolling, and maintains the light-receiving surface 10 of the solar cell 6 facing upward when the cylindrical battery 1 is placed on a desk or the like.

〔Example〕

An embodiment of the cylindrical battery according to the present invention will be described based on FIGS. 1 and 2.

In FIGS. 1 and 2, 1 is a cylindrical battery of the present invention, which includes a cylindrical outer container 4 having negative and positive terminals 2 and 3, a storage battery 5 built in the outer container 4, and a solar cell. It consists of a battery 6.

The outer container 4 is made of a transparent plastic material such as ABS, silicone, acrylic or styrene acrylic, or polycarbonate having excellent weather resistance, and is formed into a horizontally elongated cylindrical shape.

As shown in FIG. 2, the cylindrical wall of the outer container 4 has a multifaceted outer surface in which flat surfaces 4a extending in the left and right longitudinal directions are formed continuously in the circumferential direction, and the inner circumferential wall surface has a circular cross section. has been done.

One of the left and right ends of this cylindrical outer container 4, the left side in the figure, is sealed with an anode terminal plate 7 having an anode terminal 3 in the center, and the opening on the right side is sealed with a cathode terminal plate 8 having a cathode terminal 2 in the center. . The anode terminal 3 and the cathode terminal 2 each have a conical projection 3a, 2a on the inside of the terminal plate 7, 8.

The storage battery 5 has a laterally elongated cylindrical shape smaller than the outer container 4, and is, for example, an alkaline storage battery.

The solar cell 6 has a solar cell element 9 covered with a light-receiving surface 10 made of transparent resin and has an arc-shaped cross section.
Attach it to a part of the outer peripheral wall along the left and right longitudinal directions. Further, the anode terminals of the solar cell 6 and the storage battery 5 are connected to each other by a lead wire 12 via a backflow prevention diode 11, and the cathode terminals are connected to each other by a lead wire 1.
Connected by 3.

The solar cell 6 and storage battery 5 integrated in this way
is housed in the outer container 4 such that the eccentric portions at the anode side end and the cathode side end of the storage battery 5 are engaged and supported by the anode protrusion 3a and the cathode protrusion 2a on the container 4 side. In this way, the solar cell 6 and the storage battery 5 in the outer container 4 can be kept in contact with the light-receiving surface 10 even when the outer container 4 is placed on its side with its flat surface 4a on a desk or the like as shown in FIG. The flat surface 4a on the desk is point symmetrical with respect to the protrusion 3a (center of symmetry), and can be raised freely so that the light-receiving surface 10 faces upward.

The cylindrical battery 1 constructed in this way is placed in the battery compartment of various small electric devices and used as a power source for that device.In order to charge the battery, only the cylindrical battery 1 must be removed from the battery compartment. If you take it out and lay it on its side on a desk exposed to sunlight,
The integrated solar cell 6 and storage battery 5 rise up using the eccentric support portions at both ends as fulcrums to reach the light receiving surface 10.
By oriented upward and facing the sun through the transparent surface of the outer container 4 facing the light-receiving surface 10,
The output current of the solar cell 6 is controlled by the reverse current prevention diode 11.
The storage battery 5 is charged through. After charging, this battery 1 can be stored in the battery storage section and reused as a power source for the device.

Note that instead of the above embodiment, the integrated solar cell 6 and storage battery 5 are fixedly built into the outer container 4, and a weight is attached to the side symmetrical to the light-receiving surface 10 of the container 4 for charging. Even if the flat surface 4a is rolled sideways on a desk or the like, the outer container 4 itself may immediately right itself so that the light-receiving surface 10 faces upward.

In addition to making the entire outer container 4 transparent,
Only a part of the container 4 may be formed into a transparent light-transmitting surface, and the light-receiving surface 10 of the solar cell 6 may be opposed to this light-transmitting surface.

〔Effect of the invention〕

The present invention includes a storage battery 5 and a solar battery 6 in an outer container 4.
A single cylindrical battery 1 was constructed by incorporating these. Therefore, even when this cylindrical battery 1 is used as a power source for various small electric devices, it is easy to handle by simply inserting and removing it into the only battery compartment provided in the device. Since the wiring work between the battery and the storage battery storage section can be omitted at all, the assembly and structure of this type of small electric device with a built-in storage battery that uses a solar cell as a charging source can be simplified.

Moreover, the external shape of this cylindrical battery 1 is, for example, that of a general
It can also be made almost identical to the standard shape of dry cell batteries established in the JIS standard, allowing it to be used in place of dry cell batteries in small electrical equipment.

Furthermore, since only the cylindrical battery 1 needs to be placed in a place exposed to direct sunlight during charging, it is possible to effectively prevent the small electric device from deteriorating due to ultraviolet rays, thereby extending its life.

Particularly, paying attention to the cylindrical wall portion of the outer container 4 facing the light-receiving surface 10 of the solar cell 6, the flat surface 4a is formed on the outer surface and the inner peripheral wall surface is formed in a circular shape, so that the cross-sectional shape functions as a concave lens. It's getting old. As a result, the sunlight irradiated onto the outer surface of the outer container 4 is dispersed by the action of the concave lens while passing through the cylindrical wall, and is received by the light receiving surface 10 of the solar cell 6 . In the case where the solar cell 6 is housed in the outer container 4, there is originally a restriction on the area of the light-receiving surface 10 of the solar cell 6, but since sunlight is dispersed through the cylindrical wall of the outer container 4, the light-receiving surface 10 of the solar cell 6 is 10 can receive sunlight from the entire surface, leading to improved charging efficiency. Moreover, if the cylindrical wall of the outer container 4 has a cross-sectional shape that functions as a convex lens,
Sunlight is concentrated and received by a limited portion of the light-receiving surface 10 of the solar cell 6, and the corresponding light-receiving portion is overheated and deteriorates, leading to a decrease in charging efficiency, but such problems do not occur. .

Further, on the outer surface of the outer container 4, a flat surface 4a extending in the left and right longitudinal directions is continuously formed in the circumferential direction, so that this flat surface 4a functions to prevent rolling when placed on a desk or the like, and prevents charging. It is also possible to prevent damage and malfunctions caused by falling over time.
At the same time, the flat surface 4a is also positioned so that the light receiving surface 10 of the solar cell 6 receives direct sunlight.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a cylindrical battery showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional side view. 2... Cathode terminal, 3... Anode terminal, 4... External container, 4a... Flat surface, 5... Storage battery, 6... Solar cell, 10... Light-receiving surface of solar cell.

Claims (1)

[Scope of Claims] 1. A solar cell 6 for charging the storage battery 5 is attached to a part of the outer peripheral wall of the horizontally elongated storage battery 5 along the left and right longitudinal direction, and is formed into a horizontally elongated cylindrical shape. A storage battery 5 with a solar cell 6 is housed in the outer container 4, and an anode terminal plate 7 on one end of the left and right sides of the outer container 4 is
An anode terminal 3 connected to the anode side of the storage battery 5 is provided, and a cathode terminal plate 8 on the other left and right ends of the outer container 4 is provided with an anode terminal 3 connected to the anode side of the storage battery 5.
A cathode terminal 2 is provided to be connected to the cathode side of the storage battery 5, and the cylindrical wall of the outer container 4 has a multifaceted outer surface with a flat surface 4a continuously extending in the left and right longitudinal directions in the circumferential direction. The cylindrical battery is characterized in that the inner circumferential wall surface is formed to have a circular cross section, and that at least the portion of the cylindrical wall of the outer container 4 facing the light-receiving surface 10 of the solar cell 6 is transparent.